Problem Cognos8.4 with IIS7

I have installed Cognos 8.4 on Windows 7 O/S (32-bit). Everything was fine until I open it in the browser.
It is showing the error: HTTP Error 404.2 - Not Found
The page you are requesting cannot be served because of the ISAPI and CGI Restriction list settings on the Web server.
Module CgiModule
Notification ExecuteRequestHandler
Handler CGI-cognos
Error Code 0x800704ec

It helped me certain extent but couldn't resolve my problem fully (The above problem is coming after I tried with above said article). I hope that you would suggest me some way to get out of this problem.